320509000

素因数分解:

$2^3\times 5^3\times 7^2\times {\mathrm{31}}^1\times {\mathrm{211}}^1$

素因数の和:277

約数の個数: 192

約数和(自身を含む): 904849920

約数和(自身を除く): 584340920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 31, 35, 40, 49, 50, 56, 62, 70, 98, 100, 124, 125, 140, 155, 175, 196, 200, 211, 217, 245, 248, 250, 280, 310, 350, 392, 422, 434, 490, 500, 620, 700, 775, 844, 868, 875, 980, 1000, 1055, 1085, 1225, 1240, 1400, 1477, 1519, 1550, 1688, 1736, 1750, 1960, 2110, 2170, 2450, 2954, 3038, 3100, 3500, 3875, 4220, 4340, 4900, 5275, 5425, 5908, 6076, 6125, 6200, 6541, 7000, 7385, 7595, 7750, 8440, 8680, 9800, 10339, 10550, 10850, 11816, 12152, 12250, 13082, 14770, 15190, 15500, 20678, 21100, 21700, 24500, 26164, 26375, 27125, 29540, 30380, 31000, 32705, 36925, 37975, 41356, 42200, 43400, 45787, 49000, 51695, 52328, 52750, 54250, 59080, 60760, 65410, 73850, 75950, 82712, 91574, 103390, 105500, 108500, 130820, 147700, 151900, 163525, 183148, 184625, 189875, 206780, 211000, 217000, 228935, 258475, 261640, 295400, 303800, 320509, 327050, 366296, 369250, 379750, 413560, 457870, 516950, 641018, 654100, 738500, 759500, 817625, 915740, 1033900, 1144675, 1282036, 1292375, 1308200, 1477000, 1519000, 1602545, 1635250, 1831480, 2067800, 2289350, 2564072, 2584750, 3205090, 3270500, 4578700, 5169500, 5723375, 6410180, 6541000, 8012725, 9157400, 10339000, 11446750, 12820360, 16025450, 22893500, 32050900, 40063625, 45787000, 64101800, 80127250, 160254500, 320509000]

約数ペア:

[(1, 320509000), (2, 160254500), (4, 80127250), (5, 64101800), (7, 45787000), (8, 40063625), (10, 32050900), (14, 22893500), (20, 16025450), (25, 12820360), (28, 11446750), (31, 10339000), (35, 9157400), (40, 8012725), (49, 6541000), (50, 6410180), (56, 5723375), (62, 5169500), (70, 4578700), (98, 3270500), (100, 3205090), (124, 2584750), (125, 2564072), (140, 2289350), (155, 2067800), (175, 1831480), (196, 1635250), (200, 1602545), (211, 1519000), (217, 1477000), (245, 1308200), (248, 1292375), (250, 1282036), (280, 1144675), (310, 1033900), (350, 915740), (392, 817625), (422, 759500), (434, 738500), (490, 654100), (500, 641018), (620, 516950), (700, 457870), (775, 413560), (844, 379750), (868, 369250), (875, 366296), (980, 327050), (1000, 320509), (1055, 303800), (1085, 295400), (1225, 261640), (1240, 258475), (1400, 228935), (1477, 217000), (1519, 211000), (1550, 206780), (1688, 189875), (1736, 184625), (1750, 183148), (1960, 163525), (2110, 151900), (2170, 147700), (2450, 130820), (2954, 108500), (3038, 105500), (3100, 103390), (3500, 91574), (3875, 82712), (4220, 75950), (4340, 73850), (4900, 65410), (5275, 60760), (5425, 59080), (5908, 54250), (6076, 52750), (6125, 52328), (6200, 51695), (6541, 49000), (7000, 45787), (7385, 43400), (7595, 42200), (7750, 41356), (8440, 37975), (8680, 36925), (9800, 32705), (10339, 31000), (10550, 30380), (10850, 29540), (11816, 27125), (12152, 26375), (12250, 26164), (13082, 24500), (14770, 21700), (15190, 21100), (15500, 20678)]